5 ms·
Nice overview. I thought it was a bit odd that they pulled out a stieltjes integral so early on to define the mean and variance (I = Integral x dF(x)). I woul
by rrmm 10y ago
Nice overview. I thought it was a bit odd that they pulled out a stieltjes integral so early on to define the mean and variance (I = Integral x dF(x)). I wouldn't expect most people reading this sort of introductory material to be familiar with it.
Did it trip anyone up?
- rcthompson 10y agoI suppose it's the only single definition that works for both continuous and discrete variables. Although I actually read it as the more common Riemann integral definition (i.e. mean = integral of x*f(x)dx) until you pointed it out.